Screen drum for green-pea-vine hullers



June 10,1930. -F. HAMACHEK 762,2

' SCREEN DRUM FOR GREEN PEA VINE HULLERS Filed-"Jan. 18, 1924Z-Sheets-Sheet 1 FI (15- (1e WITNESSES z/m/t/ M-EW Z June 10, 1930. E F,HAMACHEK 1,762,225

SCREEN DRUM FOR GREEN PEA VINE HULLERS Filed Jan. 18, 1924 2Sheets-Sheet 2 FIQ.Z l5

FIG. 4:

WITNESSES fiEg MNENTOR' ATTORNEY Patented June 1 1 930 MACHINECOMPALTXLOF KEwAUnEE, Wisconsin, neon-renames; ertwiseonsm sem pm r93 fApplication filed a ar na' This invention'relates'" togreen pea -'Vinehullers and has for its ObjGCtftjO provide-a screen drum, which, in itsco-operation with the rotating beaters'jwithin it, -serves .to reducethe tangled'lnasses of Vines to a greater extentthan' hasheenpossible-withscreen p p p r Fig.41salongitudinalsect onal V lew ittone drums as ordinarilyconstructed;" p

Another object of the nvention is to pro .Ivide the screen drum w ithlifting ribs in-' clined with respect to their ciireetionoi' 10- tation,whereby the material will he dropped from themearlier in the cycle ofoperation or at a lower point i-n 'the drum, where. liberated peas willfall upon the screen surface of the drum and so be given an opportunityto pass out of the drum without injury by the heaters.

Another ohject -ofthe invention is to, ad

Vance the tiiningof the discharge of, material from the lifting ribs inthis manner so as to facilitate the action of theheaters in]disentan-glin'g thehunches of; vines,- whereby the pods inthe interiorof the hunches'are made I "moreireadily accessible to thejopening actionof the heaters.

* Another object s-f the invention is to prolong'the duration of thedisentangling "action of the heatersh-y the slower discharge of thevines from the liftingr'ihsfl 'Another, object offthe invention is toper open angle between the screens andthe ing ribs and so avoid the: al'gular pockets of dirt. 1'

Withthe ttested other 'tbjees in. iew;

' the inventionjjconsistsin the screen druni for g een pea viners"herein claimed and "all.-

V the sameparts in 'djifierent views,

e u a n s.

,eferring )to the accompanying; drawings in which like charactersofreference indicate Fig.;1- is a transi erse sectlonal vieweofi a portion0f.-a green j pea Wi ner showing: the screen drum constructed inaccordance with end of the screen drum, i and jtravel-ofloose'peasdischarged from lifting path of theheaters,'the'hlows ofwhieh againstp I the pods cause the podsEtoo-pen andliberate feet detail-s .ofacons'tri ction of the screen the peas.Theloose peas-pass oil-t of the d rii'nfi; giving it strength andaccessibility. 1 Another object ofthei nventien isto' inake a moresanitary machine providing a'inore p arranged inga-radialplane'-whether-theyweife of solid hoard constructien orof morefor'less Iopen construction but in the present inVen-y 7 ring it t reach adischarge angle at aglowei'f I v portionof the dIlhfIJ-ThiS llOt onlyservesto 1 r -preduce ,thefstream offaihngloose as he 'e sgig msmmse Ithis assess; ma the re1ation 6f heaters Oneof the lifting ribs;

' 25" is a diagram "showing the path of I.

rib and the path of travel of vines struck by I the heaters. i v I V Inthese drawings, 10 indicates the machine f frame,1 in which is journaledthe shaft ll ca'r rying the heaters 12 as usual. Surrounding- V v e '5the heaters 1s a screen drumniountedjonsupporting rollers and driven asusual' in the same directionasthe. heaters h ut rat a slower speed. Thedrum I consists of end rings "13,

which 'are c'onnected togetherhy regularly spaced]:lifting V-rihs 14;:which form supports. for rectangularscreen frames 15. covered withscreen material; The vines in hunches as har- Vested from the (field:irefed to the drumthrough an opening 16in the casingat the end ofthedruman'd falling onto a screen hetween the lifting rihsjyare carriedupwardly on the'--li f ting' ribs and discharged in the drlnn thronghthe sereensujrf ees thereef and a fall upon aseparatmg'apromnot shown;Heretofore llftlng rlhs have been ujsua ly tion the lifting surface ofthe lifting rib lf is inclined withfrespect to a radial plane, cans ycnd-the reach of the heaters sov that theywill not-"he struckhyfthe-heeters anti-bruised, hilt I it gives" an earlier; start to theaction of the heaters in reducing the'hiin'ches oii'vines 'hy" -the1rengagement w1ththe-outerportions of" thehunches and consequently theaction of rediicing the blunche's'isf inere thoroughland i The liftingrib 14 is preferably made with its rear surface inclined also but in theopposite direction so as to produce a symmetrical form and a convenientconstruction is shown in detail in Fig. 3, wherein an inner board 17 isclamped to a series of triangular metal frames 18 by a bolt 19 having anut 20 threaded thereon and the inclined opposite faces of the liftingrib are formed by boards 21 bolted .members 23, which bridge across thelifting rib and engage both of the screen frames fitting thereon. Theseclamping members are mounted on the bolts 19 and are held in theirclamping engagement by means of nuts 24:

threaded on the bolts, but as they are of a U-shap'e, as shown in Fig.2, they are capable of being partly turned so as to release eitherscreen frame without releasing the other, ac-

cording to whether they are given a partial turn to the right or. to theleft.- If given a full quarter turn they release both frames. At thereceiving end of the screen drum where the heaters arelonger eachlifting rib is provided with a blow-deflecting guard 25 as covered in myPatent 1,405,914, dated February-7,1922.

In operation the bunches of vines as harvested'are-fed to. the machinethrough the feed opening 16 in the end wall of the housing, where theyare caught by the end heaters and the lifting ribs and are more or lessstrung out to effect a preliminary separation or reduction that willgive better access to the peas; Thereafter the vines, still bunched tosome extent, are lifted by the inclined front walls of the lifting ribsand are fed gradual- 'ly' into the path of the heaters, whichfurtherreduces the size of the bunchesand er;- poses the pods to theblows ofthe heaters to open them. and liberate the peas. Vines slidingoff of thelifting ribs and struck by the heaters will be thrown upwardlyagainst the inclined rear walls. of the preceding lifting ribs and willfallback to be again struck by the heaters so that they may be struckrepeatedly before theysucceed in passing over the'beater drum, thusincreasing the effective-' ness of the vine-bunch-reducing and thepodopening operations.

The inclined front walls of the lifting ribs cause the loose peas toroll off at a lower ele-. vation than with the ordinary radial lif ingribs, so that the stream of falling peas is beyond the reach ofthebeaters and the peas fall on the screen surface of the next screenframe, as ndicated ln the dlagram Fig. 5.

7 Thus the loose peas are protected to a large eXtentfrom the, bruisingaction of the beatersboth by the avoidance of their being dropped in thepath of the heaters and by their dropping on the screen surface sothatwall of the lifting rib causes the vines carried thereon to start toslide off at a much lower point than when radial ribs are used andconsequently the vines project into the path of the heaters Where thebeaters are traveling upwardly with the result that the vines are givena repeatedgentle jostling or juggling action, shaking the peas therefromand increasing the opportunity for the beaters to strike and open thepods. Further-' more, the vines slide off of the inclined lifting ribgradually so that successive portions are exposed to the blows of theheaters and consequently the untangling of bunches of vines is furtherpromoted and this reduction of the tangled bunches of vines is ofextreme importance in a machine of this character for the efficiency ofthe operation depends upon it. Such peas as pass through a'vinerunopened are usually those protected from the action of the beatersbysurrounding mass of vines. Contrasted with this the operation of thecommon radial lifting rib is such that it carries the vines to aposition above the beater drum before they begin to slide off and thenmeet with the heaters where they travel in more nearly a horizontaldirection so that the bunch as a whole is thrown lat erally across thedrum without materially reducing-it and without subjecting the peas tothe repeatedaction of the beaters.

In actual practice it is found that the inclination of the liftingsurface with respect to the axial plane and the retarded release ofvines resulting therefrom causes the vines to be stretched across thegap between the lifting surface and the heaters where the loose peashave an opportunity to drop through and be discharged and affords anopportunity for a greater numberof pod-opening blows to be struck by theheaters.

The direction of travel of the vines resulting from theblow oftheheaters and the censurface of the lifting rib instead of against aradial plane and consequently they receive a glancing blow instead of abruising blow.

The inclined rear surface of the lifting rib prevents the formation of apocket in which the vines might be held by centrifugal force andretarded in their dropping action.

T he lower position for the first dropping of the vines by theinclinationof the lifting rib causing the blow received by the vineswhen hit by the heaters to take place earlier in the cycle of operationresults in "loose parts being thrown against theinclined rear surface ofthe preceding lifting rib and then falling in a position to be struckagain by a beater and again thrown against a lifting rib before reachinga point beyond the range of the beater and inQthis manner effecting asstruck increases the efficiency of the pear hulhng operation. v I

The gradual discharge of vines from the inclined lifting ribsincreases-the number of engagements of the, heaters with the vines.

and tends to drag the vines out-and disen tangle them from the bunchesin Which they are fed to the machine so thatthese bunches areprogressively broken down or reduced and, while; there IS a tendency torebunch'at.

the bottom of the machine, the succeeding action of separating suchbunches becomes easier to perform and less trouble is caused frombunching as the vines progress the machine. 7

The lifting ribs through of this invention are of simple constructionbut add great strength and rigidity to the drum and facilitate cleaning,While thesiniple clamping mechanism for securing the screen frames inplace permits of quick access to the interior of, the

drum and enables one screen frame to be re-iv moved without disturbingthe others. Y

The lifting rib With inclined front face in accordance with thisinvention, not onlyv iiialres the machine more sanitary, for the reasonshereinbefore mentioned, but'for the further rea'sonithat the angleformed be-' tween the llfhlllgflb and thescreens is more open than withthe ordinary straight lift iiig rib and so avoids the formation ofangu-{i lar pockets between the ribsand the screen in which dirt mayaccumulate. The open angle furthermore facilitates the cleaning.operation. r

. It will b byrinc lining the front face only of the lifting rib and,-While such constructions are covered b the claims mentionin onl thej J7a h a front or liftin faces of'the ribs the con-- struction asshownls-preferred.

Throughout this oasethei mentlon of the inclination of the front 'faceofthe lifting QW'hat I claim as new rib serving to causethe loose pea'stofall before they are positionediabove thebeaters" has reference to thefact that the; stream of neasas shown in Fig. 5 isb eyond the path 1 1 iof travel of the heaters,

Throughout the specification and claims of this case the term green peavinehullers is used with its broader meaning to include machinesused'for hulling limabeans and other suitable crops as the invention isnot 1: 85.111 a green pea vine huller,

beatersrotatable therein, lifting ribs extend 'ing along theinner Walls;of the d-rum coma rising triangular frames, boards secured) to theconverging'inner edges ofthe frames, clampingmembers secured to theouter-edges confined to the use with greenpeas; 'j e V anddesire tovsecure by Letters Patent 1s: 7 r

1. In agreenpea vinehulle r, a screen'drum, heaters rotatable there n,and lifting ribs 1 within the drum with their lifting-surfaces apparentthat some ojf the'bene fits ofthe present lnventionr nay be obtanedinclined rearwardly from their massa e in order that loose peas mayroll oifthere-V from befo're'reaching a position above the heaters.2:111 a green pea vine huller, a screen drum,

heaters rotatable therein, and means for sub fleeting vines repeatedlyto "the blows of the heaters comprising lifting ribs along the in .nerWalls of thedrum With their lifting faces deflectedrearwardly from thesurfac'eof'the drain, a I Y In a green pea vine huller, a screen drum,-

heaters rotatable therein,- and means for sub-- jecti ng vinesrepeatedlyto theblows of the heaters in each cycle (if-operation comprisinglifting ribs along the inner Wallsofthe drum having their front facesinclined rearwardly.

and their rear faces inclined-forwardly.

4. Ina green pea vine huller, a screen-drum,

heaters rotatable therein, and means for subjecting vinesrepeatedlytoithe blows of the heaters to-open the'pods Without unduebruis ing' of peas consisting of lifting ribs extending along the innerwalls of the drum with; v a

their frontfaees inclined rearwardly from their outer edges to d schargeloose peas beers where the heaters inove' upwardly.

"fore v they are positioned above the heaters and to expose vines to theaction of the b eat-' for" subjecting vines're'peatedly to the blowsofthebeaters to open thepodsivithout undue bruising of'peas consistingof. liftingribsfexv tending along the inner wallsofthehdrum With theirfront faces inclined rearwardlyto discharge loose 'peasbefore they arepositioned. above the heaters and to expose vines. to the actionfiof thebeaters Where-the beat-1 er-s inove upwardly, said lifting a-ribs"having forvvardlylinclined rear faces against which the vines may bethrown by the beaters torev to the pathof thebeaters.

ceive-a glancing.blow defiecting :thein back i 1410; drum, beatersrotatable thereim and lifting rirbs extending along the inner alls :of-"the! Y 7 drum comprising boards arranged at an'angle to each other toform. surfaces lnclinediwlth "respect to an axial plan'e'from one end ofthe d m-to theotherh l 7.:In a green pea vine huller, a screen drum,heaters rotatabletherein,uandglifting ribs extending along the innerwallswof t'he' drum comprising boards arranged at-an angle to eachother, inner boards connec 7 9' their inner edges, screen; framesfitting a1 their outer edges, and clamping .means i securing thescreenframes in place.

a screen drum,

of the frames, and screen frames fitting against-the outeredges of theboards and held in place by means of the clamping members.

9. In a green pea vine huller, a screen drum,

. beaters rotatable therein, lifting ribs along the inner Walls of thedrum comprising triangular frames, pairs of boards secured to theconvergmg lnner edges of the triangular frames, inner boards fittingagainst the inner 11. In a lifting edges of the, pairs of boards, screenframes 1 fitting against the outer edges of the pairs of boards, boltsconnecting the inner boards With the frames, clamping members pivotallymounted on said bolts, clamping nuts threaded on the bolts for securingthe clamping members against the screen frames.

10. In a green pea vine huller, a screen drnm, beaters rotatabletherein, lifting ribs extending along the inner Walls ofthe screen drum,screen frames fitting against the edges ofthe lifting ribs, andpivotally mounted clamping members on the lifting ribs havingeccentrically positioned pivotal points Whereby a partial turn thereofin either direction Will release one screen frame Without releasing theother.

'ib for screen drums of green pea vinehullers, a frame member havingoppositely inclined edges, a pair of boards secured to said edges, aninner board connecting the edges of said boards, a bolt passing throughthe inner board and the frame, a

nut threaded on the bolt for clamping the partstogetlier,screen framesfitting against the outer edges of the pair of boards, shoulders on theframes forming abutments for the screen frames, a clampmg memberpivotally mounted'on the bolt and engaging the edges of the screenframes, and a nut thread- 7 ed on the belt for securing the clampingmember in place, a

12. In a green pea vine huller, a screen drum, beaters rotatabletherein, and inwardly extending lifting ribs Within the drum With theirlifting faces inclined rearwardly With respect to a radial plane.

in a green pea vine huller, a screen drum, beaters rotatable therein,lifting ribs extending along the inner Walls of the screen drum, screenframes fitting against theedges of the lifting ribs, and pivotallymounted clamping members on the lifting ribs, said clamping membersbeing of a U-shape Whereby a partial swinging movement thereof in yea 'to re.

either direction will release one screen frame W thout releasing the.other. In testimony whereof, I affix my signa- FRANK HAMACHEK.

